Injection device



FIG. 1 is a perspective view of an injection device showing our new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The broken lines depict portions of the injection device which form no part of the claimed design. 

CLAIM The ornamental design for an injection device, as shown and described. 